package netty.groupchat;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.string.StringDecoder;
import io.netty.handler.codec.string.StringEncoder;

public class GroupChatServer {
    private int port;

    public GroupChatServer(int port) {
        this.port = port;
    }

    public void run() throws InterruptedException {
        EventLoopGroup bossGroup = new NioEventLoopGroup(1);
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        ServerBootstrap bootstrap = new ServerBootstrap();
        bootstrap
                .group(bossGroup, workerGroup)
                .channel(NioServerSocketChannel.class)
                .option(ChannelOption.SO_BACKLOG, 128)
                .childOption(ChannelOption.SO_KEEPALIVE, true)
                .childHandler(
                        new ChannelInitializer<SocketChannel>() {
                            @Override
                            protected void initChannel(SocketChannel ch) throws Exception {
                                ChannelPipeline pipeline = ch.pipeline();
                                pipeline.addLast("decoder", new StringDecoder());
                                pipeline.addLast("encoder", new StringEncoder());
                                pipeline.addLast(new GroupChatServerHandler());
                            }
                        });
        System.out.println("netty 服务器启动");
        bootstrap.bind(port).sync().channel().closeFuture().sync();
        bossGroup.shutdownGracefully();
        workerGroup.shutdownGracefully();
    }

    public static void main(String[] args) throws InterruptedException {
        new GroupChatServer(7001).run();
    }
}
